Surname Agnia (Агния 
, Agnia 
, Агниа ) , across the world, is quite a rare last name. The last name Agnia is characteristic of Indonesia, where it is a rare surname, Israel, and Georgia. Measured by absolute frequency, it most frequently occurs in Indonesia, Israel, and Russia. More frequently, Agnia is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Агния | Kazakhstan, Russia, Lithuania, Moldova, Belarus |
| Agnia | Russia, India, Israel, Indonesia, Democratic Republic of the Congo |
| Агниа | Russia |
| אגניה | Israel |
Agne, Agnes, Agnesa, Agnese, Agnessa, Agnieszka, Agnija, Agniya, Agnès, Agnė, Ainés, Anežka, Enas, Ines, Inés, Inês, Ágnes, Αγνή, Ага, Агна, Агне, Агнес, Агнеса, Агнесса, Агнеш, Агнешка, Агнэс, Агня, Агнєшка, Агніа, Анежка, Аньес, Инес, Інес, Інеса, אגנה, אגנס, آغني, أغنيس, إيناس, イネス, and 艾格尼丝